I / impīgrĭtas
noun hapax

impīgrĭtas

gen. ātis · gender feminine · decl. 3rd
(), impiger
activity; indefatigableness
activity, indefatigableness: viri fortissimi fortitudinis, impigritatis, patientiae, Cic. Rep. 3, 28, 40 (ap. Non. 125, 22).